17 18 ... 715161718
161 170 175

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  1. #161

    Jun 2006
    T, , Greece.
    :
    2,965




    diesel , . , 35%. .

    25hp = 18.5Kw 34w = ~30.000Kcall. . , , .

    , ? NFPA . .

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  2. #162
    Super Moderator DDD's Avatar
    Jul 2007
    Athens, , Greece.
    :
    1,695
    NFPA . -. 4 / . , - 10% ( ASHRAE) + + . diesel 10% . , gr gr .
    ,

    q = () x Cp x Q x ( - )

    q W
    kgr/m3
    Cp = 1 kJ/kgr K
    Q m3/sec
    T C

    = . NFPA20 49C 40C. .

    : 18,5 kW 34 kW?

  3. #163

    Jul 2007
    Thessaloniki, , Greece.
    :
    3,103
    35% diesel 18,5KW , 52,5 KW , (18,5/0.35) 52,5-18,5=34 , .

    DDD () 30 , . 30 . , , .
    , , ' .


    , ...

  4. #164
    Super Moderator DDD's Avatar
    Jul 2007
    Athens, , Greece.
    :
    1,695
    quote:Originally posted by peris


    DDD () 30 , . 30 . , , .
    fixed 30 . ( ) 60 min 120 min ( ). ( ) .

  5. #165

    Jun 2006
    T, , Greece.
    :
    2,965
    diesel , , .

    :
    1300cc. 2 1300cc 90%. 1300*0,9/2 = 585cc/rev =~ 0.6lt/rev.
    1h, 2900rpm, 3000*60*0,6 = 104400lt = 104m3.

    , 10% Ashrae / ?

    , ? ? fire damper. 100% ... .

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  6. #166
    Super Moderator DDD's Avatar
    Jul 2007
    Athens, , Greece.
    :
    1,695
    quote:Originally posted by miltos


    , 10% Ashrae / ?
    . :

    For internal combustion engines at full load, 10% of the total heat content of the fuel is radiated and convected into the room or test cell atmosphere, and 90% is fairly evenly divided between the shaft output (work), exhaust gas heating, and heating of the jacket cooling water.




  7. #167

    Jun 2006
    T, , Greece.
    :
    2,965
    :

    30%
    30%
    30% "heating of the jacket cooling water"
    10% .

    10% 30% , .

    Ashrae ?

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  8. #168
    Super Moderator DDD's Avatar
    Jul 2007
    Athens, , Greece.
    :
    1,695
    quote:Originally posted by miltos


    10% 30% , .
    , , . . diesel .

    quote:Originally posted by miltos


    Ashrae ?
    Applications H/B ver. 2007, chapter 15, . .

  9. #169

    Jun 2006
    T, , Greece.
    :
    2,965
    .

    , 2 :

    ) , .
    ) . , ( ).

    NFPA, .

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  10. #170

    Jul 2007
    Thessaloniki, , Greece.
    :
    3,103


    quote:Originally posted by miltos

    , ? ? fire damper. 100% ... .

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    ' ... !
    , , damper, . .
    50 , . ( ). , , , DDD. / .
    -, "", / , .


    , ...

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